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United States Patent | 6,096,221 |
Kerchouche ,   et al. | August 1, 2000 |
A process and device for treatment of water circulating in a conduit, which water carries microorganisms that must be eliminated and ions susceptible of leading to the formation of deposits on the internal wall of the conduit. To this end, there is injected in the water to be treated effective quantities of ozone and carbon dioxide. Particularly useful to treat the water conduits of a hospital building.
Inventors: | Kerchouche; Kera (Saint-Ouen, FR); Boisdon; Vincent (Maisons Laffitte, FR) |
Assignee: | Air Liquide Sante ( International) (Paris, FR) |
Appl. No.: | 137238 |
Filed: | August 20, 1998 |
Aug 20, 1997[FR] | 9710503 |
Current U.S. Class: | 210/696; 210/742; 210/743; 210/750; 210/752; 210/760; 210/764 |
Intern'l Class: | C02F 001/00 |
Field of Search: | 210/696-701,739,742,743,752,760,764,765,96.1,143,750 |
4172786 | Oct., 1979 | Humphrey et al. | 422/9. |
4931187 | Jun., 1990 | Derham et al. | 210/662. |
5085809 | Feb., 1992 | Stirling | 261/77. |
5393417 | Feb., 1995 | Cox | 210/96. |
5415783 | May., 1995 | Johnson et al. | 210/699. |
5591349 | Jan., 1997 | Ikeda et al. | 210/760. |
5609766 | Mar., 1997 | Schneider et al. | 210/662. |
5611933 | Mar., 1997 | Cleveland | 210/696. |
5720884 | Feb., 1998 | Wallace et al. | 210/743. |
5820541 | Oct., 1998 | Berlanga Barrera | 588/258. |
Foreign Patent Documents | |||
0 567 860 | Nov., 1993 | EP. | |
0 701 972 | Mar., 1996 | EP. | |
44 28 147 | Feb., 1996 | DE. | |
6-142662 | May., 1994 | JP. | |
WO 95/13989 | May., 1995 | WO. |